Senior police official Rauf Bareech said that unknown persons threw acid on the two women in a shopping centre in Mastung district and fled away.
Just like yesterday's attack, this time also the miscreants riding a motorcycle sprayed acid on the faces of the women with a syringe, the police said.
The two incidents have sent waves of concern in the province with a senior security official admitting that the two attacks could be the work of religious extremists.
The two women were immediately rushed to the Bolan Medical Complex in Quetta which is the only hospital which has a proper burns ward in the province.
On Monday, two men on a motorcycle threw acid on the faces of four women who were out shopping in a market on Saryab road in the capital city of Quetta.
Although the province has been hit hard by militant, separatist and sectarian violence in recent times acid attacks on women are rare.
